/**
 * 
 */
package com.fox.webapp.utils;

import javax.servlet.http.HttpServletRequest;

/**
 * @author yockii
 *
 */
public class WebUtil {
	
	public static String getIpAddr(HttpServletRequest request) {  
	       String ip = request.getHeader("x-forwarded-for");  
	       if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
	           ip = request.getHeader("Proxy-Client-IP");  
	       }  
	       if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
	           ip = request.getHeader("WL-Proxy-Client-IP");  
	       }  
	       if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
	           ip = request.getRemoteAddr();  
	       }
	       
	       if(ip!=null && ip.length()>15){ //"***.***.***.***".length() = 15
	           if(ip.indexOf(",")>0){
	               ip = ip.substring(0,ip.indexOf(","));
	           }
	       }
	       
	       return ip;  
	   }
}
